JAXB 按原样使用 String [英] JAXB use String as it is

问题描述

我使用 REST，我想知道是否可以告诉 jaxb 将字符串字段按原样"插入到传出的 xml 中.当然我在回来之前算过拆包，但我想省去这一步.

I use REST and i was wondering if i can tell jaxb to insert a string field "as-it-is" into the outgoing xml. Certainly i count unpack it before returning, but i would like to save this step.

@XmlRootElement(name="unnestedResponse")
public class Response{
 @Insert annotation here ;-)
 private String alreadyXml;
 private int otherDate; ...
}

是否有可能告诉 JAXB 只使用字符串而不进行转义?我希望客户端不必解析我的响应然后解析这个字段.

Is there a possability to tell JAXB to just use the String as it is without escapting? I want that the client does not have to parse my response and then parse this field.

您好，米

推荐答案

您可以使用 @XmlAnyElement 并指定一个 DomHandler 将 XML 文档的一部分保留为一个 String.

You can use the @XmlAnyElement and specify a DomHandler to keep a portion of the XML document as a String.

客户

import javax.xml.bind.annotation.*;

@XmlRootElement
public class Customer {

    private String bio;

    @XmlAnyElement(BioHandler.class)
    public String getBio() {
        return bio;
    }

    public void setBio(String bio) {
        this.bio = bio;
    }

}

BioHandler

import java.io.*;
import javax.xml.bind.ValidationEventHandler;
import javax.xml.bind.annotation.DomHandler;
import javax.xml.transform.Source;
import javax.xml.transform.stream.*;

public class BioHandler implements DomHandler<String, StreamResult> {

    private static final String BIO_START_TAG = "<bio>";
    private static final String BIO_END_TAG = "</bio>";

    private StringWriter xmlWriter = new StringWriter();

    public StreamResult createUnmarshaller(ValidationEventHandler errorHandler) {
        return new StreamResult(xmlWriter);
    }

    public String getElement(StreamResult rt) {
        String xml = rt.getWriter().toString();
        int beginIndex = xml.indexOf(BIO_START_TAG) + BIO_START_TAG.length();
        int endIndex = xml.indexOf(BIO_END_TAG);
        return xml.substring(beginIndex, endIndex);
    }

    public Source marshal(String n, ValidationEventHandler errorHandler) {
        try {
            String xml = BIO_START_TAG + n.trim() + BIO_END_TAG;
            StringReader xmlReader = new StringReader(xml);
            return new StreamSource(xmlReader);
        } catch(Exception e) {
            throw new RuntimeException(e);
        }
    }

}

了解更多信息

• http://blog.bdoughan.com/2011/04/xmlanyelement-and-non-dom-properties.html

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